Hi! I'm really happy about the tutorial, except for a small problem I encountered in chapter 7, and I've asked for help in another thread.
In the joke database management system, after adding an author, and viewing the author list, the recently added author wont be shown unless you manually refresh the page.
One solution would be to change the link to the author list from <A HREF="authors.php>Return to Authors list</A></P> to <A HREF="authors.php?t=<?php echo (time()); ?>">Return to Authors list</A></P>
This will cause the browser to retrieve a fresh copy of authors.php
Maybe it could be added in, because not having the newest author's listed did get me confused at first.
This problem only manifests itself on some browser/server combinations, but you're quite correct. Adding a parameter that 'freshens' the URL for each request will do the trick. I'll consider this for a future update to the article.